<template>
  <div>
    <div id="main" style="width: 900px; height: 600px" ref="myCharts"></div>
  </div>
</template>

<script>
import * as echarts from "echarts";
export default {
  data() {
    return {
      options: {},
    };
  },
  mounted() {
    var chartDom = document.getElementById("main");
    var myChart = echarts.init(chartDom);
    var option;

    setTimeout(function () {
      option = {
        legend: {},
        tooltip: {
          trigger: "axis",
          showContent: false,
        },
        dataset: {
          source: [
            ["product", "2012", "2013", "2014", "2015", "2016", "2017"],
            ["Milk Tea", 56.5, 82.1, 88.7, 70.1, 53.4, 85.1],
            ["Matcha Latte", 51.1, 51.4, 55.1, 53.3, 73.8, 68.7],
            ["Cheese Cocoa", 40.1, 62.2, 69.5, 36.4, 45.2, 32.5],
            ["Walnut Brownie", 25.2, 37.1, 41.2, 18, 33.9, 49.1],
          ],
        },
        xAxis: { type: "category" },
        yAxis: { gridIndex: 0 },
        grid: { top: "55%" },
        series: [
          {
            type: "line",
            smooth: true,
            seriesLayoutBy: "row",
            emphasis: { focus: "series" },
          },
          {
            type: "line",
            smooth: true,
            seriesLayoutBy: "row",
            emphasis: { focus: "series" },
          },
          {
            type: "line",
            smooth: true,
            seriesLayoutBy: "row",
            emphasis: { focus: "series" },
          },
          {
            type: "line",
            smooth: true,
            seriesLayoutBy: "row",
            emphasis: { focus: "series" },
          },
          {
            type: "pie",
            id: "pie",
            radius: "30%",
            center: ["50%", "25%"],
            emphasis: {
              focus: "self",
            },
            label: {
              formatter: "{b}: {@2012} ({d}%)",
            },
            encode: {
              itemName: "product",
              value: "2012",
              tooltip: "2012",
            },
          },
        ],
      };
      myChart.on("updateAxisPointer", function (event) {
        const xAxisInfo = event.axesInfo[0];
        if (xAxisInfo) {
          const dimension = xAxisInfo.value + 1;
          myChart.setOption({
            series: {
              id: "pie",
              label: {
                formatter: "{b}: {@[" + dimension + "]} ({d}%)",
              },
              encode: {
                value: dimension,
                tooltip: dimension,
              },
            },
          });
        }
      });
      myChart.setOption(option);
    });
  },
};
</script>

<style lang="scss" scoped>
</style>